Lore

Characters with ranks in
Knowledge (nature) can learn more about dinosaurs. When a character
makes a successful skill check, the following lore is revealed,
including the information from lower DCs.

Knowledge (Nature)

DC Result 13
This vicious looking predator is a deinonychus, an ancient reptilian
beast of the group known as dinosaurs. This result reveals all animal
traits.

18 Deinonychus, also incorrectly known as velociraptors
(which are in fact much smaller creatures), are very fast for reptiles,
and this speed combined with their razor sharp talons, nasty bite and
ability to leap in to combat to deliver a deadly initial attack make
them a very dangerous opponent.

23 Perhaps even more worrying
than the deinonychus' array of natural weaponry is its intelligence.
Most dinosaurs are quite simple minded creatures, but these reptiles
have large and advanced animal brains and often hunt in packs with
cunning tactics.

As
swift and agile as it is deadly, the deinonychus is a pack hunter,
running with several of its kind to take down prey and rip it apart
with their gutting talons.

You can apply the young simple
template to create statistics for smaller, more agile velociraptors.
Conversely, you can either increase the deinonychus to Large size and
its Hit Dice to 8 or simply apply the giant and advanced simple
templates to create a formidable megaraptor.